Paper Helicopters
Preparation
CLASS LEVEL First – sixth class
OBJECTIVES Content Strand and Strand Unit
Energy & forces,Forces
Through investigation the child should be enabled to come to appreciate that gravity
is a force,SESE:Science Curriculum page 87.
In this activity children explore how some things fall and how varying the size of the
rotor blades, the shape of the rotor blades and the weight of a paper helicopter affect
the way a helicopter spins.
Skill development
Through completing the strand units of the science curriculum the child should be
enabled to design, plan and carry out simple experiments, having regard to one or two
variables and the need to sequence tasks and tests, SESE:Science Curriculum page 79.
This activity helps them understand fair testing by
changing only one variable (i.e. shape only or length
only) at a time.
Investigating;experimenting;observing; analysing;
measuring/timing; recording and communicating.
CURRICULUM LINKS Mathematics
Data / representing and interpreting data
SESE: History
Continuity and change over time/ technological and
scientific developments over long periods
BACKGROUND A previous activity on how things fall (i.e. the weight of
the object is not a factor – Galileo and the Leaning
Tower of Pisa) would help understanding of this activity,
but not essential.
MATERIALS/EQUIPMENT Paper, Ruler, Paper Clips, Scissors
Templates of different sizes
PREPARATION Test out a few thicknesses of paper/cardboard first to
see that some of them spin.
BACKGROUND The shape of the helicopter rotor blades make it spin
INFORMATION when dropped from a height. Gravity pulls the
helicopter down.The air resists the movement and
pushes up each rotor separately, causing the helicopter
to spin.
Paper Helicopters
Activity
SETTING THE SCENE When we talk of flight we can mean a number of things. Some things
actually fly while others glide or float. What do these do – aeroplanes
and birds, gliders and flying foxes,balloons?
Have pictures of things in flight so that children can compare and
contrast.
Discuss aeroplanes – how they have to keep moving in order to stay in
the air. So how do helicopters stay still in the air?
(The spin of the
rotor blades keeps them up.)
What do sycamore seeds do when they fall off the tree? Describe
what happens.
TRIGGER QUESTIONS What makes a good helicopter?
Can you make some different helicopters and decide which one is best?
What do we mean by best? Is it the one that spins the most?
Or is it the one that takes longest to fall to the ground?
THE CHILDREN CAN DECIDE WHICH.
DEVELOPMENT Drop different things from a height and observe how they fall. Dropping flat pieces of
OF ACTIVITY paper and scrunched-up pieces could set the scene.
SAFETY Care to be taken if children stand up on chairs/stools in order to drop the helicopters
from a greater height.
ACTIVITY Begin by using the templates to make paper helicopters and watching them spin as they
are dropped.
Bend the rotor blades the other way around and watch again. Is it any different this time?
Then make variations on the design by changing the length of rotor blades, the type of
paper/card, the number of paper-clips,etc.
Cut
Cut
Cut
Bend
Bend
Cut
Fold
Fold
Leg
Rotor
Rotor
Use the templates to make paper helicopter
Paper Helicopters
Review
REVIEW What did they notice about the spins for each helicopter?
Did they spin clockwise or anticlockwise?
How can you change the spin?
Does the weight (the number of paper-clips on the stem) change the spin?
Which combination made the best spinning helicopter?
Helicopters – some possible outcomes
Two similar-sized helicopters
a) add paper clips to one: the heavier one spins more and reaches the ground first.
b) make one with longer rotor blades than the other: the one with the longer rotor
blades takes longer to reach the ground (more surface area to experience air
resistance - think of a parachute).
One large and one small helicopter
Small one reaches the ground first (less surface area to experience air resistance).
ASSESSMENT The children could draw annotated diagrams showing how their different helicopters
fell.They could be given other helicopters and asked to predict how they would fall.
Concept-mapping could be used as means of the teacher building up an
understanding of how and what the children understand about ‘forces’.
FOLLOW-UP ACTIVITIES Various graphs could be drawn,e.g.
Length of rotor blades/number of spins
(height and no.of paper-clips kept
constant)
Number of paper-clips/number of
spins (length of rotor blades kept
constant)
The children could be asked:
What else would you like to find out?
How would you find it out?
This would encourage them to design their own
investigation.
Paper Helicopters
